Will Sean Manaea pitch for A’s next season? Surgery update

Sean Manaea’s shoulder surgery Wednesday was “best-case scenario,” renowned orthopedist Dr. Neal ElAttrache told the A’s, and manager Bob Melvin said the left-hander might be able to pitch again next year.

The A’s feared that Manaea, who threw a no-hitter against Boston on April 21, would be lost for all of next year, but the repairs needed were less extensive than often is the case with shoulder surgery.

“There is some hope that next year has some potential” for Manaea’s return, Melvin said. “The surgery went well enough that there’s hope that he could pitch later on in the season.

“In the beginning, hearing about where this thing could go, we anticipated him being out for the entire season. We’ll leave a ray of hope he could come back sometime next year.”

ElAttrache performed a subacromial decompression and acromioplasty, according to A’s trainer Nick Paparesta. The procedure created more room in Manaea’s shoulder capsule, cutting a bone, the acromion area of the scapula, to do so. In addition, Manaea had a small tear in back of the shoulder labrum that was repaired with a one-anchor suture, Paparesta said.

Paparesta said no timeline will be established for Manaea until spring training, when the team will have a better idea how Manaea’s rehab — which starts Monday in Arizona — is going.

Overall, shoulder surgeries are not as successful as elbow procedures. More than 80 percent of pitchers who have Tommy John surgeries return to the level they were pitching previously. Shoulder surgeries are more varied in their complexity and in their outcomes, with one study putting the percentage of pitchers returning to their previous level at 55.

“We all feel that Sean will be back and competing at the major-league level again,” Paparesta said.

Briefly:Trevor Cahill, who missed his last start with back tightness, will start Sunday. ... Liam Hendriks will be the “opener” Friday with the second pitcher still to be determined; Chris Bassitt is a possibility.

Susan Slusser is a San Francisco Chronicle staff writer.

Oakland Athletics' Sean Manaea delivers in 1st inning against Seattle Mariners during ML:B game at Oakland Coliseum in Oakland, Calif. on Monday, August 13, 2018.

Oakland Athletics' Sean Manaea delivers in 1st inning against Seattle Mariners during ML:B game at Oakland Coliseum in Oakland, Calif. on Monday, August 13, 2018.

Photo: Scott Strazzante / The Chronicle

Photo: Scott Strazzante / The Chronicle

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Oakland Athletics' Sean Manaea delivers in 1st inning against Seattle Mariners during ML:B game at Oakland Coliseum in Oakland, Calif. on Monday, August 13, 2018.

Oakland Athletics' Sean Manaea delivers in 1st inning against Seattle Mariners during ML:B game at Oakland Coliseum in Oakland, Calif. on Monday, August 13, 2018.